asked on

Dynamic Sort in ListBox

Hi

I am developing an activeX control that uses a ListBox
as its child control. I have a property "Sort" that can be toggled to true/false.

I am not creating the ListBox with the LBS_SORT property , but I am using ModifyStyle in CWnd to add/Remove LBS_SORT. Though ModifyStyle returns
TRUE ( meaning success) the ListBox still remains unsorted.

Can u help me solve this problem.

regs
-Alexei

alexo

The listbox does not actually sort itself. It only adds items in the proper position. As you're not adding items, no sort is performed.

Two possible solutions:

1) Delete and re-add all the items (Yech!)

2) Keep two listboxes (one sorted, the other unsorted) in the same position. Enable and make visible one of them, disable and make invisible the other. Add and delete items to/from both.

alexo

Oh, by the way. This sort of questions stands a better chance of being answered in the "Windows programming" area.

jtwine100697

A cleaner solution might be to use a the Listview control (CListCtrl)...

-=- James

alexo

ialexei, if you explain why you reject an answer it will help providing you with one that better suits your needs.

ialexei

ASKER

Hi alexo

I am on critical project here , and the success of the control depends on implementing this feature. There has to be some
way of automatically sorting it with some API. If I follow the soln that u offered , it would cost me a lot of time , which I dont want to happen.
I expected someone else would try that & give me a better solution . jtwine's solution seemed good. Anyway thanx for answering this question.

ASKER CERTIFIED SOLUTION

jpk041897

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

alexo

ialexei, you cannot re-sort a listbox, no API is provided.
jtwine's solution is good. However, keep in mind that listviews behave differently from listboxes in subtle ways.